Volity is an open platform for real-time, multiplayer, Internet-based games. By "open", we mean not just that anyone can create player accounts and start playing games, but also that anyone can develop and add their own games to it! Read More... At volity.net, we are building a game network unlike any other, community-driven and created by a group of lifelong game lovers. It focuses on helping people create and play cool games together, rather than acting as yet another flashy, advertising-laden portal. While we have just begun our public beta, we already have several games available for play, authored by our first trailblazing developers. You can play them right now with Gamut, our free, Java-based client application.

Online gaming by way of jabber, sort of. Very neat.